def main():

        stop = [
                'STOP', 'STOp', 'STop', 'Stop', 'stop', 'stoP', 'stOP', 'sTOP',
                'sTOp', 'sTop', 'stOp'
                ]
        
        code = []
        flag = True

        while flag == True:
                key = input('Please enter the keys: ')
                key = str(key)
                code.append(key)
                if key == 'stop':
                        code.remove('stop')
                        flag = False

        flag = True
        
        while flag == True:
                key_1 = input('\nEnter key nr.1\n    : ')
                confirm_key = input('Please type CONFIRM to enter the key!\n    : ')
                if confirm_key == 'CONFIRM':
                        while flag == True:
                                key_2 = input('Enter key nr.2\n    : ')
                                confirm_key = input('Please type CONFIRM to enter the key!\n    : ')
                                if confirm_key == 'CONFIRM':
                                        while flag == True:
                                                key_3 = input('Enter key nr.3\n    : ')
                                                confirm_key = input('Please type CONFIRM to enter the key!\n    : ')
                                                if confirm_key == 'CONFIRM':
                                                        while flag == True:
                                                                key_4 = input('Enter key nr.4\n    : ')
                                                                confirm_key = input('Please type CONFIRM to enter the key!\n    : ')
                                                                if confirm_key == 'CONFIRM':
                                                                        while flag == True:
                                                                                key_5 = input('Enter key nr.5\n    : ')
                                                                                confirm_key = input('Please type CONFIRM to enter the key!\n    : ')
                                                                                if confirm_key == 'CONFIRM':
                                                                                        flag = False

        code = code[0:len(code):1]

        for x in code:
                print(x, end='.')

        key_1_c = code.count(key_1) #1. LINE -
        key_2_c = code.count(key_2) #2. STAR *
        key_3_c = code.count(key_3) #3. BIG SIGN @
        key_4_c = code.count(key_4) #4. PROCENT %
        key_5_c = code.count(key_5) #4. COPY SIGN :

        if str(key_1_c) > str(key_2_c) and str(key_1_c) > str(key_3_c) and str(key_1_c) > str(key_4_c) and str(key_1_c) > str(key_5_c):
                print('\nLines:', str(key_1_c), 'key 1')
        elif str(key_1_c) < str(key_2_c):
                print('\nStars:', str(key_1_c), 'key 1')
        elif str(key_1_c) == str(key_2_c):
                print("\nThere had been found a similar number of Lines and Stars so we can't deocode it")
                print('\n', 'key 1:', str(key_1_c), '\n', 'key 2:', str(key_2_c) )


        if str(key_2_c) < str(key_1_c) and str(key_2_c) > str(key_3_c) and str(key_2_c) > str(key_4_c) and str(key_2_c) > str(key_5_c):
                print('\nStars:', str(key_2_c), 'key 2')
        elif str(key_2_c) > str(key_1_c):
                print('\nLines:', str(key_2_c), 'key 2')


        if str(key_3_c) < str(key_1_c) and str(key_3_c) < str(key_2_c) and str(key_3_c) < str(key_4_c) and str(key_3_c) < str(key_5_c):
                print('\nBig Signs:', str(key_3_c), 'key 3')


        if str(key_4_c) < str(key_5_c):
                print('\nProcent:', str(key_4_c), 'key 4')
                print('\nCopy Signs:', str(key_5_c), 'key 5')
        elif len(code) > str(120):
                if str(key_4_c) < str(key_5_c):
                        print('\nProcent:', str(key_4_c), 'key 4')
                        print('\nCopy Signs:', str(key_5_c), 'key 5')